pwrdm_enable_hdwr_sar(9)

💖 pwrdm_enable_hdwr_sar(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ — today's main character is pwrdm_enable_hdwr_sar, a little function with big "let the hardware do the boring part" energy 👑

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🌸 NAME 🌸

pwrdm_enable_hdwr_sar — enable automatic hardware SAR for a pwrdm 🫶

(SAR = save-and-restore, iykyk 💅)

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🦋 SYNOPSIS 🦋

int pwrdm_enable_hdwr_sar (struct powerdomain *pwrdm );

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🎀 ARGUMENTS 🎀

• pwrdm — a struct powerdomain *. that's it, that's the whole argument list, she's low maintenance ✨

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💜 DESCRIPTION 💜

So what she does is: enable automatic context save-and-restore upon power state change for some devices in the powerdomain pwrdm 💫

⚠️ Warning bestie, listen up: this only affects a subset of devices in a powerdomain. not all of them. check the TRM closely, no cap. 📖🔍

Return values, fr fr:

• -EINVAL if the powerdomain pointer is null 😭
• -EINVAL if the powerdomain does not support automatic save-and-restore 🙈
• 0 upon success 🎉 — slay

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🌈 SEE ALSO 🌈

the whole friend group, in the Kernel file ./arch/arm/mach-omap2/powerdomain.c:

• _pwrdm_register(9)
• _pwrdm_save_clkdm_state_and_activate(9)
• _pwrdm_restore_clkdm_state(9)
• pwrdm_register_platform_funcs(9)
• pwrdm_register_pwrdms(9)
• pwrdm_complete_init(9)
• pwrdm_lock(9)
• pwrdm_unlock(9)
• pwrdm_lookup(9)
• pwrdm_for_each(9)
• pwrdm_add_clkdm(9)
• pwrdm_get_mem_bank_count(9)
• pwrdm_set_next_pwrst(9)
• pwrdm_read_next_pwrst(9)
• pwrdm_read_pwrst(9)
• pwrdm_read_prev_pwrst(9)
• pwrdm_set_logic_retst(9)
• pwrdm_set_mem_onst(9)
• pwrdm_set_mem_retst(9)
• pwrdm_read_logic_pwrst(9)
• pwrdm_read_prev_logic_pwrst(9)
• pwrdm_read_logic_retst(9)
• pwrdm_read_mem_pwrst(9)
• pwrdm_read_prev_mem_pwrst(9)
• pwrdm_read_mem_retst(9)
• pwrdm_clear_all_prev_pwrst(9)
• pwrdm_disable_hdwr_sar(9)
• pwrdm_has_hdwr_sar(9)
• pwrdm_get_valid_lp_state(9)
• omap_set_pwrdm_state(9)
• pwrdm_save_context(9)
• pwrdm_restore_context(9)

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k bye bestie, stay iconic 🧚💖 this page came to you from ./arch/arm/mach-omap2, dated October 2026 — periodt. 🍓⭐